runtime: fix invalid pointer in windows/arm64 badsignal2
Initializes the R3 register with an available address in the stack. The addressed location is used to receive the number of bytes written by WriteFile.
Fixes #56080
Change-Id: I0368eb7a31d2d6a098fa9c26e074eb1114a92704
GitHub-Last-Rev:
23dbdb53782b38819340ef6609e2c55303eb886d
GitHub-Pull-Request: golang/go#56153
Reviewed-on: https://go-review.googlesource.com/c/go/+/442216
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>